o11ykit
o11ylogsdb engine
A log database
that runs in your browser.
Generate realistic observability log datasets, inspect byte-level storage efficiency, and query them in real-time. Drain template extraction + typed columnar codecs target major storage reduction over raw OTLP/JSON.
Generate Dataset
Choose a dataset size. Records are generated deterministically from a realistic microservices workload (6 services, templated + structured + free-text bodies).
Per-Service Storage Breakdown
Chunk Inspector
Click a chunk card to inspect its details — severity distribution, time range, and byte breakdown.
Severity Timeline
Error and warning density over time — each bar is a time bucket.
Service Health
Error Clusters
Similar errors grouped by body prefix. Click to query for more.
Log Templates
The Drain algorithm extracts repeating patterns. These are the most common templates found.
Query Builder
Build a query against the log store. Toggle filters to combine conditions.